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Finding the Fourth Proportional to 139,993,459.67, 210,000,278.64 and 53,731,866.42

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Solution

The fourth proportional to 139,993,459.67, 210,000,278.64 and 53,731,866.42 is: 80,601,672.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,993,459.67 : 210,000,278.64 = 53,731,866.42 : x
  2. Step 2: Convert to fraction form
    139,993,459.67/210,000,278.64 = 53,731,866.42/x
  3. Step 3: Cross multiply
    139,993,459.67x = 210,000,278.64 × 53,731,866.42
  4. Step 4: Simplify right side
    139,993,459.67x = 11,283,706,920,047,258
  5. Step 5: Solve for x
    x = 11,283,706,920,047,258/139,993,459.67
  6. Step 6: Final answer
    x = 80,601,672.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.